Secure encryption method and component using same
AssigneeSTMicroelectronics S.r.l.
InventorsFabrice Romain, Yannick Teglia
Life of this patent
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Abstract
The protected method of cryptographic computation includes N computation rounds successively performed to produce an output data from an input data and a private key. The method also includes a first masking stage to mask the input data, so that each intermediate data used or produced by a computation round is masked, and a second masking stage to mask data manipulated inside each computation round.
Claims17
A protected method of cryptographic computation, the method comprising N computation rounds successively performed to produce an output data from an input data and a secret key,wherein the method also comprises:
- a first masking stage to mask the input data (ME), so that each intermediate data used or produced by a computation round is masked, and
- a second masking stage to mask data manipulated inside each computation round.
Dependencies are inferred from the claim text.